Most Klaviyo accounts are not broken. They are just running. A flow built eighteen months ago still fires, a segment made during onboarding still exists, and the numbers tick along well enough that nobody looks too hard. That is where the money leaks. An audit is not about finding a dramatic fault, it is about finding the quiet gaps between set up and actually working.
A proper audit looks at eight areas, not the two or three that are easy to eyeball, and scores each one so the result points to what to fix first. That structure is the difference between a tidy report and a plan you can act on. This is what each area covers and what good looks like.
Start with the metrics, because they tell you where to look
Before opening a single flow, pull the numbers that tell you whether the programme is healthy. Klaviyo's guidance is that email and SMS should drive at least 30% of total store revenue. Flows on their own should account for around 12%, campaigns around 15%, and a campaign should earn in the region of £1 per recipient.
If email is under 20% of revenue, something upstream is broken, and the eight areas below will tell you what. Split flow revenue from campaign revenue before you go further, because a healthy-looking total can hide thin automation propped up by one big sale. There is more on reading these numbers in our guide to the ecommerce metrics that matter.
1. Acquisition and sign-up
The programme starts at the pop-up, and a weak one starves everything downstream. The audit checks whether the sign-up form is converting, whether it is built for mobile as well as desktop, and whether the incentive actually suits the brand rather than defaulting to a blanket discount.
A submit rate above 3% is the baseline to beat. Below that, the usual culprits are a poorly timed trigger, a weak offer, or a form asking for too much. It is worth testing the offer structure too: a discount on the next two orders often builds a better habit than a bigger one-off discount on the first, and a two-step or exit-intent form frequently lifts capture without hurting the on-site experience. Our guide to Klaviyo sign-up forms covers the mechanics.
2. Flows and lifecycle automations
Flows are the automated baseline, the revenue that arrives whether or not anyone sent a campaign that week. This is the largest area of the audit and usually where the biggest gaps sit.
The first check is coverage. There are seven core lifecycle flows every DTC brand should have live: welcome, browse abandonment, cart abandonment, checkout abandonment, post-purchase, winback and a sunset flow for unengaged profiles. Most accounts we see are missing at least one, and the two most commonly absent, winback and sunset, are the two doing the quiet work of recovering lost revenue and protecting sender reputation.
Coverage is only the start. For each flow the audit checks the detail that decides whether it earns: are the profile filters correct so a customer who has already bought is not still receiving the full pre-purchase welcome series; does the welcome flow use storytelling, reviews and objection handling rather than just firing a code; are discount codes text-based and easy to copy rather than baked into an image nobody can paste; and is the timing on abandonment flows tuned rather than left on a default. Our guide to the core Klaviyo flows sets out what good looks like for each.
3. Advanced flows
Beyond the core seven, the audit looks at the flows that separate a decent programme from a strong one. A replenishment or reorder flow for consumable products, timed to the repurchase cycle, is the one most brands are missing and the one that most reliably pays. An upsell or cross-sell flow that recommends complementary products based on what someone actually bought is close behind.
Then there is post-purchase education, the how-to guides and usage tips that reduce returns and lift satisfaction, and a loyalty or VIP flow to reward high-value customers. For subscription brands there is a whole further layer here: activation, billing-failure recovery, churn-risk intervention and one-time-to-subscription conversion, which we cover in Klaviyo flows for subscription brands.
4. Campaign strategy and execution
Flows are the engine, campaigns are the momentum, and the audit checks whether campaigns are actually being sent with a plan behind them. The tells of a neglected account are easy to spot: long gaps between sends, no calendar mapped even a month ahead, and a content mix that is all discounts or all one format.
A healthy cadence is roughly two or more sends a week, planned around real moments rather than sent when someone remembers, and balanced across value, education and promotion rather than leaning entirely on offers. Consistency matters as much as volume, because an inbox provider reads a steady, engaged sending pattern as a trust signal.
5. Segmentation and personalisation
Weak segmentation is the quietest leak of all, because nothing looks broken. The emails send, they just go to the wrong people. A welcome series written for a cold prospect is wrong for someone who has bought twice, and a winback aimed at a lapsed one-time buyer is wrong for a subscriber who simply skipped an order.
The audit checks whether you are sending to engaged segments rather than blasting the full list, whether new and returning customers get different content, and whether dynamic fields and product blocks are actually populated rather than assumed. Most accounts also sit on Klaviyo's predictive data, predicted lifetime value, predicted next order date, churn-risk score, and route almost nothing on it. There is a fuller treatment in the Klaviyo features most brands ignore.
6. Deliverability and list health
Everything else is academic if the emails land in spam. Deliverability caps the ceiling on every flow and campaign you own, so it is never optional in an audit.
The technical check is authentication: SPF, DKIM and a DMARC policy in place and configured properly, not just present. A weak or partial setup leaves the domain exposed to spoofing and drags deliverability down. Beyond the plumbing, the audit looks at whether bounce, spam and unsubscribe rates are being monitored at all, and whether the list is being cleaned.
The single most common fault we find is the absence of a working sunset flow. If nothing is automatically suppressing people who have not opened in months, you are teaching Gmail that your mail goes unread, and it acts on that for your whole list. Manually checking suppression now and then is not the same thing. A list that engages is worth more than a list that is merely large.
7. A/B testing and optimisation
A programme that never tests is guessing. The audit checks whether testing is happening at all, and whether it is being done in a way that produces usable answers.
That means regular subject-line tests on both flows and campaigns, content tests on layout and call-to-action placement, and offer tests such as a percentage discount against a money-off one. The discipline that most accounts lack is isolation: one variable per test, and results actually documented so they inform the next decision rather than being forgotten. A test you do not record is a test you will run again by accident.
8. SMS, reviews and loyalty
The final area covers the channels and assets that sit alongside email. On SMS, the audit checks whether consent is being collected at sign-up and checkout, whether any automations are live, and whether the numbers already sitting in the account are being used at all. Plenty of brands collect hundreds of phone numbers at checkout and never send a thing, which is captured demand left on the table. Our guide to Klaviyo SMS covers when it is worth switching on.
On reviews and loyalty, the checks are whether you are collecting reviews and user-generated content through post-purchase flows, whether that content is reused in emails to build trust, and whether a loyalty or referral programme is actually promoted through flows and campaigns rather than just existing on the website.
Fixing in the right order
Eight areas is a lot to look at, which is exactly why the order matters more than the checklist. Deliverability problems, broken flows and integration errors come first, because they cost money every day they persist. Underperforming campaigns, weak segmentation and list-growth gaps come second, as missed opportunity rather than active loss. Content polish and testing come last, because they optimise a working foundation rather than build one.
Run it in that order and the audit stops being a flat list of forty things and becomes a plan. Fix the roof before you rearrange the furniture.
What to ask if you are hiring someone to do it
Plenty of brands would rather have an agency run the audit. Fair enough, but the questions you ask will tell you quickly whether they know what they are doing.
Ask how they measure an email programme. If they lead with open rates, press them, because the real answer involves revenue per recipient, click rate, email's share of total revenue, and the flow-versus-campaign split. Ask what they look at before changing anything, because a good agency audits before it builds, and "we start building flows straight away" is a flag. Ask how they review deliverability, and if it is not part of their process, that is a gap. Specific answers are worth more than confident ones. This is the same instinct we bring to a Klaviyo engagement: audit first, build on what the data shows.
Klaviyo audit FAQs
What is a Klaviyo audit?
A Klaviyo audit is a systematic review of your account across acquisition, flows, campaigns, segmentation, deliverability, testing and metrics, designed to find where the programme is underperforming and why. Done properly it produces a priority-ordered list of what to fix first, starting with the issues costing money now rather than cosmetic improvements.
How often should you audit a Klaviyo account?
A full audit once or twice a year suits most DTC brands, with a lighter quarterly check on deliverability and flow performance. Audit sooner if you have migrated platforms, changed subscription tools, seen open rates decline over consecutive months, or noticed email's share of revenue slipping. Major changes to the store or tech stack are always worth a review.
What should email drive as a share of revenue?
Klaviyo's guidance is that email and SMS should drive at least 30% of total store revenue, with flows contributing around 12% and campaigns around 15%. Under 20% usually signals underbuilt flows, weak segmentation or inconsistent campaigns. Split flow revenue from campaign revenue when you assess it, because a healthy total can still hide thin automation.
What is the most common problem a Klaviyo audit finds?
The most frequent fault is a missing or broken sunset flow, which lets unengaged profiles drag down deliverability for the whole list. Close behind are missing winback flows, broken abandonment timing, image-based discount codes customers cannot copy, and segments that no longer match how customers behave. All are common and all are fixable.
Should I audit my Klaviyo account myself or hire an agency?
Either works, provided the audit covers all the key areas and runs in priority order rather than as a flat checklist. Doing it yourself suits brands with the time and a reasonable grasp of deliverability. If you hire an agency, judge them on whether they audit before they build and whether deliverability is part of their process, rather than on how quickly they promise new flows.
Look at all eight areas, not the two that are easy to check, and fix in order: deliverability and broken flows first, opportunity second, polish last. That is the difference between an audit that produces a tidy report and one that actually lifts revenue. If you would rather have a second pair of eyes on an account, our Klaviyo work shows what a rebuilt flow architecture did for a brand across its UK and US accounts, and where the gains came from.